The main cities in and their area code are:
Philadelphia: 215, 267, 445, Pittsburgh: 412, 878, Allentown: 610, 484, Erie: 814 and Reading: 610, 484.
The main airport is the Philadelphia International Airport
The main WhatsApp businesses are Manufacturing and Fabrication: . Amish and Mennonite Goods such as handcrafted furniture, quilts, and other products and finally Tourism-Related Services. You can contact these businesses with WhatsApp.